Pentair Pool Heaters & Heat Pumps

Pool Supply Depot stocks the full Pentair heating line: MasterTemp and Sta-Rite Max-E-Therm gas heaters, high-efficiency ETi heaters, ASME commercial models and UltraTemp heat pumps. Natural gas and propane models run from 125,000 to 400,000 BTU, and heat pumps from 75,000 to 145,000 BTU. Not sure which one fits your pool? Use the guide below or contact our Henderson, NV store and we'll size it with you.

Looking for parts? Visit Pentair MasterTemp Heaters & Parts for heat exchangers, controls, sensors and ignition parts.

Pentair Heater Lineup

Series	What it is	Sizes we carry	Best for
MasterTemp High Performance (EC-462024 to EC-462029)	Current-generation MasterTemp gas heater	125K, 250K, 400K BTU; NG and LP	Most residential pools and spas
MasterTemp (460730–460737)	Pentair's best-selling low-NOx gas heater	200K, 250K, 300K, 400K; NG and LP	Replacing an existing MasterTemp
MasterTemp HD (460805, 460806)	MasterTemp with a cupro-nickel heat exchanger	250K, 400K; NG	Salt pools, spas and heavy use
Sta-Rite Max-E-Therm (SR200, SR400)	Pentair's Sta-Rite gas heater, sharing the MasterTemp platform	200K, 400K; NG and LP; HD version	Replacing an existing Max-E-Therm
MasterTemp & Max-E-Therm ASME	ASME-certified versions	250K, 400K; NG and LP	Commercial pools, HOAs, hotels, code-required jobs
ETi High Efficiency (461112, 461113)	Condensing gas heater, Pentair's most efficient	250K, 400K	Pools heated often, lowest gas bills
UltraTemp heat pumps	Electric heat pump; Heat/Cool models also chill the water	75K to 145K BTU	Extending the Las Vegas swim season, cooling hot summer water
UltraTemp ETi Hybrid (460969)	Heat pump and gas heater in one unit	220K	Heat-pump savings with fast gas backup
GulfStream HE110-RA	Pentair-built heat pump	110K	Budget heat pump option

How to Choose a Pentair Heater

Gas or heat pump. Gas heats fast in any weather and suits spas and on-demand heating. A heat pump costs far less to run but heats slower and works best when the air is above about 50°F, which covers most of the Las Vegas swim season.
Fuel type. Order NG (natural gas) or LP (propane) to match your gas supply. Only convert with a manufacturer-approved kit for that exact model.
Size. See the sizing guide below. When in doubt, go one size up: a larger heater reaches temperature faster and runs fewer hours.
Heat exchanger. Choose HD / cupro-nickel for salt systems, spas or water that runs out of balance.
Replacing an old unit? Send us the existing model, serial number, BTU rating, fuel type, plumbing size and photos of the equipment pad. We'll compare plumbing height, gas connection, venting and footprint before you order.

Sizing Guide: How Big a Heater Do I Need?

A gas heater raises your pool roughly this many degrees per hour: (BTU × efficiency) ÷ (gallons × 8.34). Example: a 400,000 BTU heater at 84% efficiency on a 20,000-gallon pool adds about 2°F per hour.

Pool size	Gas heater	Heat pump
Spa only (under 1,000 gal)	125K–200K BTU	Not ideal for spas
Up to 15,000 gal	200K–260K BTU	100K–120K BTU
15,000–25,000 gal	300K–400K BTU	120K–140K BTU
Over 25,000 gal or commercial	400K BTU, ASME, or two units	Multiple units

Pool and spa combo? Size for the pool, and go 400K if you want the spa hot fast.

Pentair Heater FAQ

What's the difference between MasterTemp and Max-E-Therm?

Both are Pentair heaters built on the same platform. Max-E-Therm carries the Sta-Rite name and is often chosen to match an existing Sta-Rite equipment pad.

Do I need an ASME heater?

Usually only for commercial pools or where local code requires it. Residential pools use the standard models.

Can a Pentair heat pump cool my pool?

Yes. The Heat/Cool (H/C) UltraTemp models can chill the water, which helps in Las Vegas summers when pool water climbs into the 90s.

Will it work with my automation?

Many Pentair heaters integrate with compatible Pentair automation for scheduling, spa temperature control and remote operation. See Pentair Pool Automation.

Why Buy Your Pentair Heater from Pool Supply Depot

Local stock in Henderson, NV. Pick up at our store if you're in the Las Vegas Valley.
Nationwide freight shipping. Heaters ship by freight. Free shipping on orders over $50 does not cover freight items.
Contractor pro pricing. Pool pros: log in to your PSD account to see your pricing.
Real help sizing. Our team will match the right model, fuel and size to your pool.
In-store-only models. Some heaters show "available in store only" because of manufacturer pricing rules. Contact us for a quote.

Shop all brands in Pool Heaters & Heat Pumps or read our Pool Heater Replacement & Commercial Heater Guide.